Ratchet monkey-wrench.



A. 0. JENRIGH. RATOHET MONKEY WRENCH.

. APPLIGATION FILED JUNE 18, 19(18'.

928,764. V Patented July 20. 1909.

' Infill:

I m Q I o I a l W I V N 3 1 lutneooeo v Q v F i lunch or ARTHUR O.JENRIOH, OF COLUMBIA, NEVADA.

RATCHET MlONKEY-WRENCH.

Specification of Letters Patent.

Application filed. June 18, 1908.

Patented July 20, 1909.

Serial No. 439,187.

To all whom it may concern:

Be it known that I, ARTHUR O. J ENRIGH, a citizen of the United States,residing at C0- lumbia, in the county of Esmeralda and State of Nevada,have invented certain new and useful Improvements in RatchetMonkey-Wrenches, of which the following is a specification.

This invention relates to improvements in ratchet monkey wrenches, andthe object is to provide a wrench of this type of simple and improvedconstruction havin effective means for quickly and convenient yadjusting the jaws of the wrench, together with means for reversing theaction of the ratchet mechanism to adapt the wrench for either right orleft hand action, the whole structure being strong and durable.

With the above objects in view, the invention consists in the novelfeatures of construction hereinafter fully described, particularlypointed out in the claim, and clearly illustrated by the accompanyingdrawing, in

Figure 1 is a side elevation of a wrench constructed in accordance withmy invention, and Fig. 2, a longitudinal sectional view of the same.

Referring now more particularly to said drawing, the numeral 1designates the casing or body-portion of the wrench which contains thejaws and operating screws therefor, said. casing being formed preferablycylindrical, with its upper end open and its lower end formed with aslot through which the engagingortions of the jaws 2 project.

Said casing 1s ormed about its circumference intermediately of its endswith ratchet-teeth 3, and on each side of the teeth with acircumferential groove.

The jaws 2 slide on rods 4 fixed at their 7 ends in the walls of thecasing. Said jaws are moved to and from each other by operating-screws5. These screws carry intermediately of their ends, intermeshing gears6, and each screw is formed on each side of its gear 6 with o positelypitched threads, that is, right and eft hand threads, and the threads ofone screw are arranged o positely to those of the other, namely, the efthand threads of one being opposite the right hand threads of the otherand vice versa. The shanks of the jaws in their meeting faces are cutout to receive the gears 6 when the jaws are brought together.

The open end of the casing is closed by a cap 7 secured in position byscrews or other securing-means, and said cap is formed with a slot inwhich an operating-wheel 8 is mounted, said wheel having teeth meshingwith one of the gears 6, and flanges 8 on each side of the teethprojecting from the ca and knurled to enable the wheel to be readi yrotated by the finger to effect the movement of the jaws to and fromeach other.

The numeral 9 designates the handle formed preferably tubular and shownas being attached to the body of the wrench by straps 10 which aresecured at their ends to the inner end of the handle and encircle thecasing 1 and lie in the circumferential grooves formed on' each side ofthe ratchet teeth 3. The handle is formed at its inner end with asuitable cavity to receive the awl 11 and the spring 12 which normallyorces said pawl into engagement with the ratchet-teeth 3. This pawl isprovided with a handle 13 which extends through the handle of the wrenchand carries at the end of.

the wrench-handle, a finger-portion 14. The pawl is formedwith a roundedshoulder on one side and a square shoulder on the other side, so'thatwhen the handle is moved in one direction the pawl will effect theturning of the casing and jaws to unscrew the nut, but when moved in thereverse direction, the

awl will sli over the teeth of the ratchet.

y pulling t e handle of the pawl outwardly and turning it and thenreleasing it so that the spring will again force the awl into engagementwith the ratchet-teet the action of the wrench is reversed.

Having thus fully described my invention what I claim as new and desireto secure by Letters Patent of the United States, is:

A wrench of the character described comprising a body-portion formedabout its exterior with ratchet teeth, sliding jaws arranged in saidbody portion, operatin screws for said jaws arranged parallel withintermeshing gears carried by said screws, an

each other, each screw being formed with a s ring-pressed pawl carriedby the handle right and left hand threads, the positions of an engagingthe ratchet-teeth. 10 the right and left hand threads of one screw Intestimony whereof I aflix my signature being the reverse of those of theother screw, in the presence of two Witnesses.

ARTHUR C. JENRICH. operating-wheel carried by the body-portionWitnesses:

and meshing with one of the gears, a handle C. B. GILLEsPIE,

movable relatively to the body-portion, and HUGER WILKINSON.

